http://bostonmalocksmith.com/locksmithblog The most helpful locksmiths in Boston - (617) 671-1961 Tue, 22 Dec 2009 20:47:05 +0000 http://wordpress.org/?v=2.9 en hourly 1 http://bostonmalocksmith.com/locksmithblog/secret-knock-detection/ http://bostonmalocksmith.com/locksmithblog/secret-knock-detection/#comments Tue, 10 Nov 2009 17:06:38 +0000 admin http://bostonmalocksmith.com/locksmithblog/?p=121 We found this really cool video. This guy made a really cool gadget that detects a secret knock that the user sets, if knocked properly the door unlocks. It’s Interesting, if you want to keep up to date on this guy or gadget – you can read Steve Hoefer’s blog.

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